The Kyle of Sutherland (Scottish Gaelic: An Caol Catach) is a river estuary that separates Sutherland from Ross-shire. It flows into the Dornoch Firth and is fed by the rivers Oykel, Shin, River Cassley and Carron. The downstream extent of the Kyle of Sutherland is the eponymous bridge at Bonar Bridge. The upstream end of 'the Kyle' as it is locally known, is the furthest inland extent of tidal water, which corresponds to 'the bailey bridge', beyond Rosehall.